RG3D VS Iron

Fyrox is a production-ready engine with extensive documentation and resources that focuses on 2D and 3D rendering. To use the Fyrox engine, add the following line to your Cargo.toml:

rg3d has recently added web support.

Rg3d, written in Rust: https://rg3d.rs

Maybe bevy plus egui? I have never used wasm or bevy though. rg3d apparently supports wasm, too, and includes its own GUI lib (but it's hard to customize the rg3d gui, as far as I can tell).

some game engines https://github.com/PistonDevelopers https://www.libhunt.com/l/rust/topic/game-engine https://github.com/rg3dengine/rg3d https://medium.com/pragmatic-programmers/game-development-with-rust-31147f7b6096

I've written many things using Iron and it's been fine. It's not particularly developed any more but I am not aware of any major outstanding issues.

I don't miss the time when we basically only had Iron

iron

There're many web framework in rust, such as SergioBenitez/Rocket , actix/actix-web ,poem-web/poem , iron/iron . How do I chiose, anyone suggestion？

I'm not sure which definition of backend you are thinking of here. In case you simply mean "server side", here are a couple of libraries that might be of use: iron - been a while since I used it, used it for a couple smaller projects rocket (nightly only) - no personal experience, but a lot of people seem to like it diesel - a bit complex to wrap your head around, but once you get the idea it's really nice. Definitely check out the examples.

it's taken by a web framework https://github.com/iron/iron

Your comment touches on a few misconceptions I see a lot.

Firstly, `reqwest` exposes both an async and a synchronous API, allowing the developer to choose which one to use. They are largely interchangeable code-wise. [1]

Secondarily, and more broadly, async is possible to opt out of. You must understand that most web and network related libraries will be async by default for performance, because people who write in Rust and people who write web servers typically care greatly about performance. This is the intersection of those two groups. That being said, there are options outside of that ecosystem. [2]

If you truly want to use an asynchronous library without migrating your application to run entirely on an async runtime like tokio, you can run it inside of a synchronous function without much trouble. I've put together a playground link for you. [3]

1. https://docs.rs/reqwest/0.11.2/reqwest/blocking/index.html

2. Iron: https://github.com/iron/iron

There are several web frameworks for Rust: Rocket, Actix, Warp, Iron - but only Actix has released a stable 1.0 release, and there has been considerable controversy over how it uses unsafe Rust.